EP3338002A1 - Ressort élastomère pour véhicule - Google Patents
Ressort élastomère pour véhiculeInfo
- Publication number
- EP3338002A1 EP3338002A1 EP16754156.4A EP16754156A EP3338002A1 EP 3338002 A1 EP3338002 A1 EP 3338002A1 EP 16754156 A EP16754156 A EP 16754156A EP 3338002 A1 EP3338002 A1 EP 3338002A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- set forth
- apertures
- elastomer spring
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 89
- 239000000806 elastomer Substances 0.000 title claims abstract description 85
- 239000000725 suspension Substances 0.000 claims description 24
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 description 10
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
- F16F1/377—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape having holes or openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
- B60G11/48—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs
- B60G11/52—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having helical, spiral or coil springs, and also rubber springs
- B60G11/54—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds not including leaf springs having helical, spiral or coil springs, and also rubber springs with rubber springs arranged within helical, spiral or coil springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/14—Plastic spring, e.g. rubber
- B60G2202/143—Plastic spring, e.g. rubber subjected to compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/45—Stops limiting travel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/58—Stroke limiting stops, e.g. arranged on the piston rod outside the cylinder
Definitions
- the present invention relates generally to vehicles and, more particularly, to an elastomer spring for a vehicle.
- a suspension system of a vehicle limits transmission of an impact force from tires to a frame of the vehicle.
- components of the suspension system jounce or collapse to absorb energy generated by the impact.
- Such components typically include a damper assembly and a coil spring.
- the suspension system cannot completely dissipate the energy, the components of the suspension system may impact each other, thereby transmitting forces from the tires to the frame, which is not desirable. Due to constrained packaging space at the wheel, particularly a rear position of the vehicle, an auxiliary spring may be required to help the coil spring manage high
- the suspension system may be damperl ess and not use a damper assembly.
- the present invention is an elastomer spring for a vehicle including a cylindrical body adapted to be disposed within a coil spring of the vehicle and extending axially between a first component and a second component of the vehicle.
- the second component is spaced from and moveable toward the first component along an axis of the coil spring.
- the body has a height greater than a width thereof and a plurality of apertures spaced about the body. The apertures are configured to allow the spring to compress axially for absorbing energy as one of the first component and the second component move along the axis.
- the present invention is a suspension system for a vehicle including a first component, a second component spaced from and movable toward the first component along a jounce axis, a coil spring disposed between the first component and the second component, and an elastomer spring for absorbing energy between the first component and the second component disposed within the coil spring and extending axially between the first component and the second component.
- the elastomer spring includes a plurality of apertures. The apertures are configured to allow the elastomer spring to compress axially for absorbing energy as one of the first component and the second component move along the jounce axis.
- One advantage of the present invention is that an additional elastomer spring is provided for a vehicle.
- the elastomer spring compresses axially, absorbing energy and preventing direct impact between a first component and a second component of a suspension system or vehicle, which can damage the components of the vehicle.
- the elastomer spring may be made of a TPU, cast urethane, rubber, or any other elastomer that allows compression.
- the elastomer spring is lightweight and durable.
- the elastomer spring can have a constant or variable rate of compression.
- the elastomer spring unites the combination of a jounce bumper, spring isolator, and spring. Still a further advantage of the present invention is that the elastomer spring may eliminate the use of a damper assembly for a damper! ess suspension system of the vehicle. Another advantage of the present invention is that the elastomer spring may be used in environments where humidity is a concern for metal springs.
- FIG. 1 is a bottom perspective view of one embodiment of an elastomer spring, according to the present invention, illustrated with a portion of a vehicle.
- FIG. 2 is a perspective view of the elastomer spring of FIG. 1.
- FIG. 3 is a perspective view of another embodiment, according to the present invention, of the elastomer spring of FIG. 1.
- FIG. 4 is a perspective view of a portion of the elastomer spring of FIG. 2 including a plurality of apertures having a parallelogram configuration.
- FIG. 5 is a perspective view of a portion of the elastomer spring of FIG. 2 including a plurality of apertures having a rhomboidal configuration.
- FIG. 6 is a perspective view of a portion of the elastomer spring of FIG. 2 including a plurality of apertures having a rectangular configuration of FIG. 1.
- FIG. 7 is a perspective view of a portion of the elastomer spring of FIG. 2 including a plurality of apertures extending parallel to a jounce axis of FIG, 1.
- FIG. 8 is a perspective view of a portion of the elastomer spring including a plurality of apertures having an S-shaped configuration.
- FIG, 9 is a perspective view of a portion of the elastomer spring including a plurality of apertures having a hexagonal configuration.
- FIG. 10 is a perspective view of a portion of the elastomer spring including a plurality of apertures having a Z-shaped configuration.
- an elastomer spring for a vehicle, generally indicated 12, a portion of which is illustrated in FIG. 1.
- vehicle 12 may be an automotive vehicle, a non-automotive vehicle, a bicycle, etc., without departing from the scope of the present invention.
- vehicle 12 may include a suspension system, generally indicated at 14, a portion of which is illustrated in FIG. 1.
- suspension system 14 includes a first component 16 and a second component 18.
- the first component 16 or the second component 18 is a frame of the vehicle 12.
- the second component 18 jounces toward the first component 16 as a result of an impact force applied to tires 19 of the vehicle 12. It should be appreciated that, if the impact force is large enough, the second component 18 may contact the first component 16, which can damage either the first component 16 and/or the second component 18, and/or other components of the vehicle 12. It should also be appreciated that the elastomer spring 10 may be used in non-vehicle applications.
- the suspension system 14 is damperless such that it does not include a traditional or conventional damper assembly such as a shock absorber and/or jounce bumper.
- the vehicle 12 and/or suspension system 14 includes a coil spring 20 disposed between the first component 16 and the second component 18.
- the elastomer spring 10 is an additional spring and disposed within the coil spring 20 to prevent direct impact between the first component 16 and the second component 18.
- the elastomer spring 10 is an intermediate cushion between the first component 16 and the second component 18, which is movable toward the first component 16 along a jounce axis JA of the coil spring 20. It should be appreciated that the elastomer spring 10 is compressed between the first and second components 16, 18 as the first and second components 16, 18 move toward each other.
- the elastomer spring 10 is positioned between the first and second components 16, 18 to absorb energy as the first and second components 16, 18 move along a jounce axis JA toward each other to prevent one of the first and second components 16, 18 from directly impacting the other of the first and second components 16, 18, It should be appreciated that absorbing energy as the first and second components 16, 18 move along the jounce axis JA toward each other limits jounce travel and prevents the first and second components 16, 18 from directly impacting each other, which can damage the first and second components 16, 18.
- the first component 16 and the second component 18 are spaced from each other.
- the coil spring 20 has a first or lower end disposed on the second component 18, which forms a spring seat and a second or upper end disposed on the first component 16, which forms a spring guide.
- the elastomer spring 10 is disposed within the coil spring 20 and coupled to the second component 18. It should be appreciated that the elastomer spring 10 may be held in place by the lower end of the coil spring 20 upon the spring seat of the second component 18.
- the elastomer spring 10 includes a body 28 having a generally cylindrical shaped configuration.
- the body 28 includes an interior surface 30, which may define a hollow interior to present the body 28 with a ring-shaped cross-sectional configuration.
- the body 28 has a generally circular ring-shaped cross-sectional configuration (FIG 4).
- the body 28 includes an exterior surface 32 spaced from the interior surface 30.
- the body 28 has a thickness of approximately three (3) millimeters to approximately one hundred (100) millimeters between the interior surface 30 and the exterior surface 32,
- the body 28 has a height greater than a diameter thereof. In one embodiment, the height of the body 28 is at least two times the diameter of the body 28. It should be appreciated that the body 28 may have any suitable thickness and/or height.
- the elastomer spring 10 also includes at least one flange 34 extending radially outwardly from the body 28.
- the flange 34 is generally circular in shape and extends from a lower end of the body 28.
- the flange 34 may include one or more locators 35 extending upwardly to allow the flange 34 to be located relative to either one of the coil spring 20 and/or second component 18.
- the locator 35 is generally rectangular in shape.
- the elastomer spring 10 may include an aperture or opening 36 at an upper end thereof.
- the elastomer spring 10 is integral, unitary, and formed as a one-piece member. It should be appreciated that the upper end of the body 28 is spaced axialiy from the flange 34. It should also be appreciated that the opening 36 communicates with an interior of the body 28.
- the elastomer spring 10 further includes a plurality of apertures or holes 38 spaced about the body 28 to allow the body 28 to compress axialiy for absorbing jounce between the first and second components 16, 18.
- the apertures 38 extend radially through the body 28.
- the apertures 38 are defined by the interior and exterior surfaces 30, 32, It should be appreciated that the apertures 38 are spaced circumferentiaily and axialiy along the body 28 of the elastomer spring 10.
- the apertures 38 influence the compression of the body 28 of the elastomer spring 10.
- the apertures 38 affect a stiffness of the body 28 of the elastomer spring 10.
- the stiffness of the body 28 is directly related to an amount of travel the elastomer spring 10 will compress.
- the stiffness of the body 28 affects an amount of the impact force that is dampened by the elastomer spring 10 to prevent the entire impact force from being transferred from the second component 18 to the first component 16. Therefore, increasing the number of apertures 38 and changing a configuration of the apertures 38 directly affects the stiffness of the body 28 of the elastomer spring 10.
- increasing the number of apertures 38 generally reduces the stiffness of the body 28 of the elastomer spring 10.
- increasing a size of the apertures 38 generally reduces the stiffness of the body 28 of the elastomer spring 10.
- the stiffness of the elastomer spring 10 can be fine tuned by varying the number and size of the apertures 38 in the body 28. It should be appreciated that the stiffness of the elastomer spring 10 can be constant or varied depending on the application in which the elastomer spring 10 is used in.
- the body 28 of the elastomer spring 10 has an initial diameter ID. During compression, radial expansion of the body 28 of the elastomer spring 10 is limited because the apertures 38 allow the body 28 to collapse upon itself rather than bulging. Therefore, the elastomer spring 10 can be positioned in tight spaces where radially expansion is not desirable. It should be appreciated that radial expansion of the body 28 of the elastomer spring 10 may be prevented all together such that the elastomer spring 10 does not expand radially when compressed.
- the apertures 38 may have any suitable configuration.
- the apertures 38 may be parallelograms.
- the apertures 38 may have a rhomboidal configuration, as illustrated in FIG. 5.
- the apertures 38 may have a rectangular configuration, as illustrated in FIG. 6.
- the apertures 38 may be polygonal in shape or have at least a curved portion. It should be appreciated that when the apertures 38 are parallelograms, the apertures 38 may be rotated such that opposite corners of the parallelograms are aligned with the jounce axis JA as illustrated in FIG. 7. It should also be appreciated that the apertures 38 may have an S-shaped configuration, as illustrated in FIG.
- apertures 38 may be a combination of configurations. It should still further be appreciated that the apertures 38 are similar to that disclosed in a co-pending application, Serial No. 14/433,290, the disclosure of which is hereby expressly incorporated in its entirety herein by reference.
- the apertures 38 may converge toward the axis of the body 28 of the elastomer spring 10.
- an area of the apertures 38 at the exterior surface 32 may be larger than an area of the apertures 38 at the interior surface 30.
- Each of the apertures 38 has a length L defined between the interior surface 30 and the exterior surface 32.
- a height H and width W of each of the apertures 38 may decrease along the length L of the apertures 38 extending from the exterior surface 32 toward the interior surface 30.
- the width W of the apertures 38 may remain constant while only the height H decreases along the length L of the apertures 38 extending from the exterior surface 32 toward the interior surface 30.
- the height H of the apertures 38 may remain constant while only the width W decreases along the length L of the apertures 38 extending from the exterior surface 32 toward the interior surface 30.
- the elastomer spring 10 is made of an elastomeric material.
- suitable elastomeric materials for the elastomer spring 10 include block copolymers, such as polyurethanes, etheresters, styrols, and etheramides. Additional examples of suitable elastomeric materials for the elastomer spring 10 include elastomer blends, such as cross-linked and/or non- cross-linked olefins.
- the body 28 of the elastomer spring 10 may comprise at least one of TPU, cast urethane, rubber, and elastomer.
- the elastomer spring 10 may include a guide 40 disposed within the body 28 for guiding compression of the elastomer spring 10.
- the guide 40 is a relatively rigid cylindrical member disposed in the interior of the body 28 and having one end extending through the opening 36 of the body 28. It should be appreciated that the guide 0 is optional.
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201562208302P | 2015-08-21 | 2015-08-21 | |
PCT/US2016/047244 WO2017034866A1 (fr) | 2015-08-21 | 2016-08-17 | Ressort élastomère pour véhicule |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3338002A1 true EP3338002A1 (fr) | 2018-06-27 |
EP3338002B1 EP3338002B1 (fr) | 2021-01-13 |
Family
ID=56740587
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16754156.4A Active EP3338002B1 (fr) | 2015-08-21 | 2016-08-17 | Ressort élastomère pour véhicule |
Country Status (4)
Country | Link |
---|---|
US (1) | US10704636B2 (fr) |
EP (1) | EP3338002B1 (fr) |
BR (1) | BR112018003119A2 (fr) |
WO (1) | WO2017034866A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11413920B2 (en) * | 2019-05-13 | 2022-08-16 | Basf Polyurethanes Gmbh | Spring element, in particular jounce bumper, for a vehicle shock absorber |
CN113748277A (zh) * | 2019-05-13 | 2021-12-03 | 巴斯夫聚氨酯有限责任公司 | 用于车辆减震器的弹簧元件、尤其是颠簸缓冲器 |
US11959526B2 (en) * | 2019-06-03 | 2024-04-16 | Basf Polyurethanes Gmbh | Spring element, in particular jounce bumper, for a vehicle suspension |
GB202119090D0 (en) * | 2021-12-29 | 2022-02-09 | R E H Forks Ltd | Spring assembly for fork of bicycle or motorcycle |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1229796A (fr) | 1959-03-04 | 1960-09-09 | Renault | Ressort en caoutchouc |
FR2360014A1 (fr) | 1976-07-27 | 1978-02-24 | Ouest Cie | Butee de talonnage en elastomere compact |
US5467970A (en) * | 1994-06-06 | 1995-11-21 | General Motors Corporation | Vehicle suspension system with jounce bumper |
FR2786838B1 (fr) * | 1998-12-03 | 2001-02-16 | Hutchinson | Butee en elastomere |
DE10344102B3 (de) | 2003-09-24 | 2005-02-17 | Zf Friedrichshafen Ag | Federträger mit einer Zusatzfeder |
US20100230877A1 (en) * | 2009-03-13 | 2010-09-16 | Gm Global Technology Operations, Inc. | Vehicular impact bumper assembly |
EP2600029B1 (fr) * | 2011-02-10 | 2016-01-27 | NOK Corporation | Arrêt de rebond |
KR20150068414A (ko) * | 2012-10-02 | 2015-06-19 | 바스프 에스이 | 댐퍼 |
US9599184B2 (en) * | 2015-02-20 | 2017-03-21 | Beijing West Industries Co., Ltd. | Fluid damper assembly having a multi-functional bushing |
US10000102B2 (en) * | 2015-06-19 | 2018-06-19 | GM Global Technology Operations LLC | Tunable compact spring aid |
EP3393218B1 (fr) * | 2017-04-21 | 2019-06-05 | C.R.F. Società Consortile per Azioni | Support élastique ayant un capteur de charge intégré pour systèmes de suspension d'un véhicule automobile |
-
2016
- 2016-08-17 EP EP16754156.4A patent/EP3338002B1/fr active Active
- 2016-08-17 WO PCT/US2016/047244 patent/WO2017034866A1/fr active Application Filing
- 2016-08-17 BR BR112018003119A patent/BR112018003119A2/pt not_active Application Discontinuation
- 2016-08-17 US US15/754,090 patent/US10704636B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10704636B2 (en) | 2020-07-07 |
EP3338002B1 (fr) | 2021-01-13 |
BR112018003119A2 (pt) | 2018-09-25 |
US20180245652A1 (en) | 2018-08-30 |
WO2017034866A1 (fr) | 2017-03-02 |
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